Sodium nitroprusside and S-nitroso-N-acetylpenicillamine significantly decreased the proliferation of vascular smooth muscle cells. Divergence of inhibitory effects on monocyte Chemotaxis and adhesion to endothelium in vitro, Inhibition by nitric oxide and nitric oxide-producing vasodilators of DNA synthesis in vascular smooth muscle cells, Effect of Intracoronary Serotonin on Coronary Vessels in Patients with Stable Angina and Patients with Variant Angina, Effects of inhibition of nitric oxide formation on basal vasomotion and endothelium-dependent responses of the coronary arteries in awake dogs, Superoxide anion is involved in the breakdown of endothelium-derived vascular relaxing factor, Paradoxical Vasoconstriction Induced by Acetylcholine in Atherosclerotic Coronary Arteries, Clinical indices in untreated hypertension, Tetrahydrobiopterin Improves Endothelial Function in Cardiovascular Disease: A Systematic Review. oxide synthase (NOS). The antimitogenic effect of S-nitroso-N-acetylpenicillamine was inhibited by hemoglobin and potentiated by superoxide dismutase, supporting the view that nitric oxide was the ultimate effector. NO had no direct effect on cytochrome c or on xanthine oxidase. Administration of nitrite in the drinking water inhibited the leukocyte adhesion and emigration and prevented the arteriolar dysfunction. Effects of nitric oxide (NO) and NO-producing vasodilators such as glyceryl trinitrate and sodium nitroprusside were tested on DNA synthesis in the clonal rat aortic smooth muscle cells, RACS-1. Using a heterologous system and a luciferase reporter, we further identify that the 3'-untranslated region of the ABCG1 mRNA is responsible for the regulatory effects of AMPK activation. Propionaldehyde changed none of these activities. The effects of series of α,β-unsaturated aldehydes on hepatic glutathione, cytochrome P450, and NADPH-cytochrome c reductase activity were compared with time. In experimental models of hypertension in the rat, resistance arteries present a blunted response to endothelin, a potent vasoconstrictor peptide. The vascular endothelium is a monolayer of cells between the vessel lumen and the vascular smooth muscle cells. Clinical and experimental data suggest that there is a multifaceted link between ADMA and insulin metabolism and action on one hand, and ADMA and glucose utilisation on the other. I.v. endothelium; The oxygen-derived free radical superoxide anion (.O2-) plays an important role in the pathogenesis of various diseases. The functional classification of these genes highlighted several major biological pathways modulated in aortic media by atorvastatin: effectors involved in smooth muscle tone; extracellular matrix; intracellular mediators of cell proliferation. Age- and sex-adjusted ADMA values were significantly (p<0.05) correlated with hs-CRP (r=0.279) and HOMA-IR (r=0.288) in diabetic patients. Nox2 expression was upregulated in the aortic endothelium of ApoE(-/-) mice before the appearance of lesions, and this was associated with elevated ROS levels. HFD feeding impaired FMV in double knock-out mice, but not in C57BL/6 mice. Both substances were equally unstable. Vascular reactivity was measured in the forearm resistance vessels of 11 normal subjects (serum LDL cholesterol = 2.76 +/- 0.10 mmol/liter) and 14 age-matched patients with hypercholesterolemia (serum LDL cholesterol = 4.65 +/- 0.36 mmol/liter, P < 0.05). Release of NO from the endothelial cells induced by bradykinin and the calcium ionophore A23187 was reversibly enhanced by infusions of L-arginine and L-citrulline, but not D-arginine or other close structural analogues. inflammation; J Clin Invest 90:1248-1253, L-arginine abrogates salt-sensitive hypertension in Dahl/Rapp rats, Kubes P, Suzuki M, Granger DNNitric oxide: an endogenous modulator of leukocyte adhesion. Marked renal vasoconstriction was also observed with elevations in glomerular blood pressure (PGC) and reductions in the glomerular capillary ultrafiltration coefficient (Kf). The altered design of the hypertensive blood vessels enhanced calculated pressure responses, which may contribute to the maintenance of elevated blood pressure. databases (up to January 31, 2014), including MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials (CENTRAL), using an established strategy. Incubation of isolated cat neutrophils with L-NMMA, but not L-NAME, resulted in direct upregulation of CD11/CD18 as assessed by flow cytometry. Abnormal insulin signaling in endothelium under diabetic conditions and patho-physiological consequences on cardiovascular homeostasis will also be discussed. It is unclear whether blood vessels are dysfunctional in an early environment of hypercholesterolemia alone and if this contributes to the vascular injury response. The purpose of this study was to determine whether infusion of L-arginine, the precursor of the endothelium-derived relaxing factor, nitric oxide, improves endothelium-dependent vasodilation in hypercholesterolemic humans. Three studies showed no positive outcome, and one study showed that low-dose BH4 had no effect but that high-dose BH4 did have a significantly different result. Nitric oxide inhibited O2+ produced by xanthine oxidase only when added simultaneously with substrate, consistent with the short half-life of NO in oxygenated solution. Patients with variant angina have occlusive coronary-artery spasm at a dose that dilates normal vessels and causes only slight constriction in vessels from patients with stable angina. NADPH-cytochrome c reductase induction was not decreased by this treatment, thus indicating that in vivo these changes are due to a mechanism other than generalized inhibition of protein synthesis. Abdominal aortic rings were prepared and responses to acetylcholine (10(-9)-10(-4) M) were determined in vitro. Endothelin-1 system activation plays an important role in the etiology of atherosclerotic vascular disease. The purpose of this study was to examine whether HMG-CoA reductase inhibitor improves impaired endothelial function of the aorta in spontaneous hypertensive rat (SHR) and to determine the underlying mechanisms involved. Therefore, metabolic abnormalities such as insulin resistance, dyslipidemia, compensatory hyperinsulinemia and overt hyperglycemia may all contribute to impaired NO bioavailability and abnormal vasodilatation in diabetic patients. Future studies are needed to elucidate pharmacologic options for reducing endothelin-1 system activity especially in older hypertensive adults, though regular aerobic exercise must continue to be a point of emphasis for maintaining/improving vascular health. Severe hypercholesterolemia leads to atheromatous lesion formation following injury and stresses the role of vascular injury in atherogenesis and suggests different mechanisms are involved in endothelial dysfunction and the injury response. The descending thoracic aortae of rabbits fed either normal diet, a high cholesterol diet for 2-5 wk (hypercholesterolemic, HC), or a high cholesterol diet for 6 mo (atherosclerotic, AS) were perfused in a bioassay organ chamber with physiologic buffer containing indomethacin. Lipofundin MCT/LCT Inhibits Levcromakalim-Induced Vasodilation by Inhibiting Endothelial Nitric Oxide Release, Urinary Dimethylamine (DMA) and Its Precursor Asymmetric Dimethylarginine (ADMA) in Clinical Medicine, in the Context of Nitric Oxide (NO) and Beyond, Effet des précurseurs de monoxyde d'azote sur la fonction vasculaire et la performance à l'exercice, Recent Advances in Manufacturing Innovative Stents, Immunotoxic mechanisms of cigarette smoke and heat-not-burn tobacco vapor on Jurkat T cell functions *. Nitric oxide is a pivotal endothelium-derived substance. Diabetic patients were recently diagnosed and did not have a history of any diabetes-related complications. Infusion of L-NMMA acutely decreased, whereas intravenous L-arginine rapidly increased, urinary cGMP in both groups. Animal models that show vascular dysfunction demonstrate the protective role of endothelial NO dependent pathways. These data reveal novel anti-inflammatory properties of nitrite and implicate the use of nitrite as a new natural therapy for microvascular inflammation and endothelial dysfunction associated with hypercholesterolemia. Micro- and macrovascular complications such as nephropathy, retinopathy, atherosclerosis, and coronary artery disease are usually preceded by endothelial dysfunction, a condition characterized by impaired vasorelaxation resulting from reduced bioavailability of the endothelial mediator nitric oxide (NO). Ox-LDL was significantly correlated with left atrium diameter(r=0.358, p=0.005) independently of other clinical variables (beta(SE):1.288(0.455), p=0.007). Normal coronary vessels had a biphasic response to intracoronary serotonin: dilation at concentrations up to 10(-5) mol per liter, but constriction at 10(-4) mol per liter. Endothelial NOS, also known as nitric oxide synthase 3 or constitutive NOS, is an enzyme that in humans is encoded by the NOS3 gene located in the 7q35-7q36 region of chromosome 7. Oxygen reduction by nitric-oxide synthases. The purpose of this study was to determine if vasodilator drugs that generate nitric oxide inhibit vascular smooth muscle mitogenesis and proliferation in culture. Myoglobin in several forms such as metmyoglobin, oxymyoglobin, and nitric oxide-myoglobin were interacted with an equimolar concentration of hydrogen peroxide. Neuronal NOS (nNOS) takes place in neuronal signalling, endothelial NOS (eNOS) takes place in vasodilation and inducible NOS (iNOS) takes place in immune responses. The possibility that L-arginine might form the basis of treatment for coronary endothelial abnormalities induced by hypercholesterolaemia could be worth investigating. Role of nitric oxide. The mitochondrial production of nitric oxide is catalyzed nitric-oxide synthase (mtNOS). Furthermore, effective prevention, whether primary or secondary, is backed by the findings of several landmark trials. The induction of PPARalpha mRNA expression by atorvastatin in L-NAME treated rats also suggests that this pathway could participate in the protective effect. However, because of the open design of the study, these results should be carefully debated. Pressing the buy now button more than once may result in multiple purchases, Authors: Tousoulis, Dimitris; Kampoli, Anna-Maria; Tentolouris Nikolaos Papageorgiou, Costas; Stefanadis, Christodoulos, Source: Current Vascular Pharmacology, Volume 10, Number 1, 2012, pp. Isoform expression and total nitrate concentration ( NOx ) in the course of coronary atherosclerosis cardiovascular disease and... In direct upregulation of CD11/CD18 as assessed by flow cytometry soluble guanylate cyclase induced by NO function. 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